<div>
	<p>Please select columns that are expected to conform to certain <b>string patterns</b>. For instance:</p>
	
	<ul>
		<li>Email addresses typically conforms to some variant of the '<i>aaaa@aaaaa.aaa</i>' pattern.</li>
		<li>Phone numbers typically conforms to number based string patterns.</li>
		<li>Person names typically have a limited set of patterns, not including numbers and special signs.</li>
	</ul>

	<table>
		<tr>
			<th>&nbsp;</th>
			<th>Name</th>
			<th>Type</th>
		</tr>
		<#list columns as column>
		<tr>
			<td><input type="checkbox" name="columns"
				id="column_checkbox_${column_index}" value="${column.name}"
				title="${column.name}" /></td>
			<td><label for="column_checkbox_${column_index}">${column.name}</label></td>
			<td>${column.type!"n/a"}</td>
		</tr>
		</#list>
	</table>
</div>